Canon Service Tool 4905

You will not find this tool on Canon’s official website. Canon does not intend for end-users to reset waste ink counters; they want you to pay for service or buy a new printer. Consequently, the tool is distributed through third-party repair sites, forums (like Reddit r/printers), and file-sharing platforms.

Note: Some models require 2 or 4 presses of Stop/Reset. If the printer doesn’t enter service mode, try variations. canon service tool 4905

A: No. Service mode only works over USB. Disable Wi-Fi on the printer before starting. You will not find this tool on Canon’s official website

If you genuinely need this tool for professional repair work: Note: Some models require 2 or 4 presses of Stop/Reset

Would you like help diagnosing a specific printer error code or finding the correct Canon support channel for your model instead?

The most critical step in using this tool is forcing the printer into Service Mode. While procedures vary slightly by model, the standard manual method involves button manipulation: